title: Dual-band multi-aperture enhanced redox imaging of colonic adenomas for endoscopes with a high-performance CMOS imager.
abstract: Dual-band multi-aperture imaging of colonic adenomas based on the redox condition of mucosal cells for next-generation endoscopes is proposed. A low-noise and high-dynamic-range CMOS imager with the folding integration and the cyclic ADC is utilized in the single-imager multi-aperture camera system with 475-nm and 530-nm band-pass filters. A redox image is calculated from four kinds of images, 475-nm and 530-nm fluorescence images for 365-nm and 405-nm excitation lights. Dark current and random noise are reduced with a selective averaging method. The contrast of the redox image has been successfully enhanced.
authors.forename: K
authors.initials: K
authors.lastname: Kagawa
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: M-W
authors.initials: MW
authors.lastname: Seo
authors.forename: S
authors.initials: S
authors.lastname: Kawahito
authors.forename: Y
authors.initials: Y
authors.lastname: Kominami
authors.forename: K
authors.initials: K
authors.lastname: Yamada
authors.forename: S
authors.initials: S
authors.lastname: Yoshida
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D001672:Biocompatible Materials / Q000494:pharmacology; D003111:Colonic Polyps / Q000175:diagnosis*; D019723:Endoscopes; D005453:Fluorescence; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D008670:Metals / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D012666:Semiconductors
chemical_list: D001672:Biocompatible Materials; D008670:Metals; D010087:Oxides